Annealing-box



(No Model.)

W. H4. WHITE. .ANNBALING' BOX.

N0. 527,642. Paiien'cd.O01'n 16, 1894.

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UNITED TATns ATENT FFECEQ! WILLIAM H. WHITE, on APOLLO, PENNsYLvANIA;

ANNEALlNc-Box.'

SPECIFICATION forming part of Letters Patent No. 527,642,dated October16, 1894.

Application filed August 11, 1894.

To a/ZZ whom it may concern:

Be it known that I, WILLIAM H. WHITE, a citizen of the UnitedStates,`residing at Apollo, in the county of Armstrong and State ofPennsylvania, have invented certain new and useful Improvements inAnnealing-Boxes; and I do declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

My invention has relation to annealing boxes adapted for annealingvarious articles,

and especially sheets of steel and iron or mal- I eable iron castings,and among the objects 1n view is to provide an extremely simple, durableand eflicient annealing-box Aso constructed as to withstand very highdegrees of heat without warping or bending, and with the above and otherobjects in view all of which will presently appear, my inventionconsists in the novel construction, arrangement and combination of partsconstituting my improved annealing-box, as hereinafter fully described,illustrated in the drawings, and

pointed out in the appended claims.

In the drawings',Figure 1 is a vertical longitudinal sectional view ofmy improved annealing-box. Fig. 2 is a side elevation thereof.

y Fig. 3 is a vertical transverse section.

. I would state that in carrying out my invention, I may make the box ofvarious dimensions to accommodate a greater or less number of the sheetsor plates to be annealed, which sheets or plates may also be of variouslengths.

A indicates the improved annealing-box which is constructed of I-beams Carranged transversely of the box and bent to provide the arched orcurved upper side or top for the box. The beams that I preferably employare twelve inches in height and five and onehalf inches across the baseor flange thereof, though different sizes of beams may of course vbeemployed. The beams are arranged so that their bases or anges abutagainst each other, and they are then bolted or riveted firmly togetheras at B whereby an extremely firm and strong box is obtained, capable ofwithstanding extremely high degrees of heat without warping or bending.

The box is open at bottom and is adapted serrano. 520,033. (Nomads.)

near the bottom of the box, as seen at D, in.

the direction of the length of the' box, and employ angle strips E,which are arranged as seen more plainly in Fig. 3, and bolted or rivetedto the beams C as at F.

The ends of the boxare closed by steel, iron or cast-iron heads G,bolted or riveted as at II tothe ends of the outer beams C.

It will be readily seen that by my construction of annealing-box Iobtain great strength throughout the entire length thereof, whateversaid length may be, which is due to the inwardly and outwardlyprojecting flanges'of the beams C being braced together at shortintervals.

In using my annealing-box, the sheets to be annealed are piled upon thehereinbefore-described bottom, as usual and in such quantities as topermit the box to be placed over the same and onto the said bottom. Anairtight seal is then eected at the point where the lower edge of thebox meets the bottom, preferably by means of sand placed upon theoutside. The whole is then `rolled into the annealing furnace and thedoor of the latter closed, and the gas turned on to produce such aheatas is necessary to properly anneal the sheets, which heat usually variesbetween 1,200 and 1,600o according to the thickness of the sheets. Afterannealing, the box and contents are withdrawn from the furnace, and thebox removed from over the annealed sheets, which latter are thenremoved, and the box is ready to receive another charge.

What I claim, and desire to secure by Letters Patent, is-

1. The herein described annealing-box comprising I-beams arrangedtransversely of the box with their bases or lianges abutting and rivetedor bolted together both upon the inside and outside of the box,saidbeams being bent or curved to provide an arched roof or top, and sidesfor the box, as specified.

2. The herein described annealing box comprising I-beams arrangedtransversely of the IOO box with their bases or flanges abutting andside and riveted or bolted to the Ill-beams, as 1o riveted or boltedtogether both upon the inspecified. side and outside of the box, saidbeams being In testimony whereof I affix mysignature in bentordcurvedfto pl'lovige anharched rogf gr presence of two witnesses. 5top, an sides or t e ox, t e ases o t e said beams being eut awa)7 uponthe interior WM H TIHTE' of the box near the lower edges of the sidesWitnesses: of the box, and angle-strips arranged longi- L. G. WILSON,tudinally of and Within the box upon each T. J. BALDRIGE.

